Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Cascaded Op Amps

Cascaded Op Amps

Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Back-illuminated SPAD with 89.4% peak PDP at 660 nm based on 40 nm CIS technology.

Optics letters·2026

Same author

Enhanced performance of 1064 nm high-strain laser diodes via triangular quantum well design.

Optics express·2026

Same author

1.5 μm coupled-cavity passively Q-switched self-Raman laser.

Optics letters·2025

Same author

High-brightness supersymmetric transversally coupled stepped-tapered laser diode.

Optics express·2025

Same author

Wide tuning of topological-charge vortex lasers generated by a single VCSEL-pumped Nd:YVO<sub>4</sub> crystal.

Optics express·2025

Same author

Passively Q-switched Nd<sup>3+</sup>:YVO<sub>4</sub>/Cr<sup>4+</sup>:YAG two-dimensional laser array.

Optics letters·2025

Search research articles

Related Experiment Video

Updated: Jan 8, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

Cascaded coupled supersymmetric semiconductor lasers with high power conversion efficiency.

Ting Fu, Hang Zhou, Chuanwang Xu

|December 15, 2025

Summary

New supersymmetric semiconductor lasers effectively filter high-order modes in wide waveguides. These lasers achieve a single-lobe far-field pattern and high output power, offering improved mode control.

More Related Videos

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

Related Experiment Videos

Last Updated: Jan 8, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

Area of Science:

Optics and Photonics
Semiconductor Device Physics

Background:

High-order modes in wide waveguides can degrade laser performance.
Effective mode control is crucial for achieving desired beam characteristics.

Purpose of the Study:

To design and fabricate supersymmetric semiconductor lasers for effective mode control.
To investigate the performance of these lasers in filtering high-order modes.

Main Methods:

Utilized two cascaded coupled supersymmetric transformations.
Designed a lateral narrow ridge waveguide (5.0 μm width, 0.5 mm length).

Main Results:

Achieved a single-lobe far-field pattern up to 250.0 mA injection current.
Obtained a continuous-wave output power of 230.0 mW at 250.0 mA.
Reached maximum efficiency of 61.4% at 80.0 mA and maximum output power of 276.1 mW at 300.0 mA.
Demonstrated stable operation without significant thermal rollover.

Conclusions:

Supersymmetric transformations provide an effective method for mode control in wide waveguides.
The developed supersymmetric lasers exhibit excellent beam quality and high output power.
This work offers new insights into managing modes in wide waveguide semiconductor lasers.